diff --git a/NEWS.md b/NEWS.md
index bc69a92..697f6c9 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -10,6 +10,8 @@
 
 * `XPtr` gets explicit copy constructor and assignment operator definitions, which were two missing components of the [Rule of three](https://en.wikipedia.org/wiki/Rule_of_three_(C%2B%2B_programming)) (@michaelchirico)
 
+* Windows: update to libxml2 2.9.10 and libxslt 1.1.34 and add ucrt libs
+
 # xml2 1.3.2
 
 * `read_html()` and `read_xml()` now error if passed strings of length greater than one (#121)
diff --git a/src/Makevars.ucrt b/src/Makevars.ucrt
new file mode 100644
index 0000000..1a2e101
--- /dev/null
+++ b/src/Makevars.ucrt
@@ -0,0 +1,2 @@
+CRT=-ucrt
+include Makevars.win
diff --git a/src/Makevars.win b/src/Makevars.win
index b278b9a..e0f6d1d 100644
--- a/src/Makevars.win
+++ b/src/Makevars.win
@@ -1,9 +1,9 @@
-VERSION=2.9.8
+VERSION=2.9.10
 RWINLIB=../windows/libxml2-$(VERSION)
 PKG_CPPFLAGS=-I../inst/include -I$(RWINLIB)/include/libxml2 \
 	-DLIBXML_STATIC
 
-PKG_LIBS=-L$(RWINLIB)/lib${R_ARCH} -lxml2 -llzma -liconv -lz -lws2_32
+PKG_LIBS=-L$(RWINLIB)/lib${R_ARCH}${CRT} -lxml2 -llzma -liconv -lz -lws2_32
 
 all: clean winlibs